Soot separator



April 2, 1935. K, BECK 1,996,608

sooT sfsPARAToR I Filed oct. 28, 19:53 5 sheets-sheet 1 al f K. BECK SOOT SEPARATOR pril 2, 1935.

Filed OCT.. 28, 1953 3 Sheets-Sheet 2 ...1... tttbtfob o .2.... vu...

pril 2,1935. K BECK 1,996,608A

sooT SEPAMOR Filed oct. 28, 1933 5 shts-Sheet 3 memes Apr. z, 1935 1,9fsuwol PATENT OFFICE 1,996,608 soo'r sErAaA'ron Karl Beck, Stuttgart,

, assignor to Wil- Germany helm Beck, Stuttgart-Zullenhausen, Germany Application October 28, 1933, Serial No. 895,672 In Germany September 27, 1932 'z claims. (c1. iss-56) This invention relates to a device preventing scot trom escaping from chimneys, for instance such pertaining to bakeries, the ultimate object being the prevention of damage caused by the deposit of the soot in the neighborhood of the chimneys concerned and in the region adjacent thereto.

For this purpose the invention comprises a plurality of screens or equivalent members which can be lifted and lowered by suitable means, for instance by a rope or by a system of levers or the like, and can be placed into a position in which they cover the oriiice of the chimney in order to intercept the soot, whereas they are located below that orice, laterally therefrom, when the smoke is practically free from soot. The screens are preferably hinged to a vertically movable frame arranged in a channel surrounding the chimney and communicating at its lower end with a soot collecting chamber from which the soot can be removed from time to time.

The screen-carrying frame may be designed as a shell enclosing the upper end of the chimney and shiftable along it, and instead of the upper part of the chimney proper a separate hood may be provided consisting of two coaxial members of concrete or the like, between which the screencarrying frame is movable. The screens may constitute a sort of roof when they are in their operative position, and at the sides of this roof may be plates serving as protection from wind when thescreens are in said position. Lowering the movable parts of the device may be effected by-gravity from any suitably located place below, for instance in the work-shop of a bakery.

The invention is .illustrated diagrammatically and by way of example on the accompanying drawings on which Figure l is. chiey an axial section through a chimney, or through the upper portion thereof, in connection with a vertical section through certan members surrounding said chimney portion and constituting the device forming the subject-'matter of the present invention, one of said members being shown partly in front view in the lower portion of the righthand half of the gure; Figure 2 is a side view of the chimney and of the complete device, this latter being shown in another .position than in Fig. l; Figure 3 is a top view of the device; Fig. 4 is 'a separate cross sectional view of the right-hand upper corner of Fig. 3, this Fig. 4 being drawn to an enlarged scale; Figure 5 is vertical section through the members pertaining to, and constituting, one of the walls of the device;

Figure 6 is a iront-view of the members shown in 5, seen from the left-hand side o! this ligure; Figure? is a view similartoFlg. 5, showthe same modication; and Figure 12 shows.

some members of the upper portion of Fig. 9, drawn to an enlarged scale.

On the drawings, a` (Figs. l and 2) denotes the chimney which is square in transverse section, and a1 (Figs. 3 and 4) denotes the vertical edges of that chimney which are provided in known manner with angle-iron bars b. On the outer surfaces b1 of these bars run rolls c1 supported inbrackets c afxed to plates da and y (Fig. 4).

Adjacent to the plates d2 are plates e which are located on opposite sides of the chimney, and there are also two plates g which are located at the other sides of the chimney and project laterally. over them where they are provided with vertical guide members guiding said plates e, and, besides, plates f located opposite the outer surfaces of the plates e and remote from them, as shown in Fig. 4. Said guide members are U- shaped in transverse section, and that sideof each thereof which is located opposite the adjacent angle-iron bar b constitutes the before-mentioned plate d2. 'I'he adjacent rim e1 of each of the plates e is bent oil at right angles and this bent-off rim engages a guide groove da. The plates e and f constitute, in fact, slides, and in the further course of this speciiication they will be referred to as such.

To the uppermost portion e2 (Fig. 1) of each slide e are attached by hinges es (Figs. 5 and 6) frames h provided with groups of wide-mashed screens i secured at their vertical rims i1 to said frames by means of ledges ha attached detachably in turn to the said frames by bayonet members h1.

The upper ends g2 of the vertical plates g are of triangular shape (Fig. 2) and the edges g1 (Fig. 1) of said ends serve as supports for ledges ha provided at the vertical rims of the frames h outside of the ledges hz. The two frames h, with the members attached to them, can be tilted towards one another so as to form a kind of roof (Fig. 2), in which positions they are edges g1 of the plates y.

held by thev The plates g and the slides e,` f, that is to say, thetwo plates g and the two pairs of slides, form together a vertically movable shell which can assume a lower position, as in Fig. 1, and an upper position, as in Fig. .2. The frames h with their sieves can be, and are, turned towards and against one another only when said shell is in its upper position in which case the triangular ends a: ex-

tend above the orifice of the chimney. To the apex g3 of each triangle gz is affixed a rope ki running. over a roll :c1 supported in a frame xa supported in turn on the top of the chimney. sieve frames are in their operative positions, as in Fig. 2, their upper rims h4 (Figs. 4 and 5) con`- tact with said frame ma.

I (Figs. 1 and 2) denotes a roof over which the chimney extends. Near the roof, pins m project forth from the chimney and serve as supports for the slides f when these are in the lowermost positions, as in Figs. 1 and 7, in which latter figure fi denotes the lower edge of the slide f which comes in contact with said pins. Below each slide f, or below the pins m respectively, is a box n which is retained in its place by sliding bolts m and serves for the reception of soot, viz. of the ne particles of the same.

Also the slides ,f are provided with groups of screens i2 (Fig. 8) attached to frames 0 hinged to said slides by hinges f2. The screens are held in place by ledges oz ailixed to the frames o by bayonet members o1. The screens iz are narrowmeshed. Like the frames h of Fig. 5, the frames Ao can be tilted towards one another so as to constitute a kind of roof. In this position the edges oaof the-frames o rest upon the surface of the frames h5, as in Fig. 2 there being then two screen roofs one above another (see Fig. 12) The upper edges oa of the screens z'contact with the sides of the roll support :c in the same manner as the upper edges h4 of the frames h.

The roll support :c extends transversely across the top of the chimney, as shown in Fig. 3, and from its ends extend stays ma (Figs. 1 and 3) to both sides, at right angles with respect to said support :c and in oblique direction, the lower ends of said stays resting upon the top surface of the chimney and being there connected with one another by horizontal ledges .r3 (Figs. 1 and 3), that are downwardly inclined, towards the interior of the chimney, as in Fig. 1. 'Ihe upper edges :r4 of these ledges serve as soot stripping members for the screens i. When the screen frames h and o are in their inoperative positions, as in Fig. 1, they are prevented from tipping outwardly by abutment members p provided at the slides e and j.

The manner of operation of the device is as follows:

If, for instance, the furnace or oven provided with such device is to be started, or red up, or if the ire is stoked or fresh fuel is supplied to the fire, in which cases generally a large amount of smoke carrying with it much soot arises, the soot is prevented from entering into the atmosphere by pulling the shell f, .g upwardly from its position of rest (Fig. 1) into its operative position (Fig. 2) by means of the rope k1, the lower free end of which hangs down in position to be freely accessible in the bake house or whatever other place it may be. When the sieve frames h and o arrive in their upper, or uppermost, position, they tilt inwardly by their own weight, thus by gravity, and form the above-mentioned roofs, as in Fig. 2. In this position the angularly bentoif rims h: of the frames h takev over the upper When the edges ai of the triangular upper .ends an of the plates a whereby wind streaming against these plates is prevented from entering into the chimneys, it being understood, that 'the chimney hood of soot are intercepted by the screens i and the fine ones by the screens i2. The coarse particles fall back into the chimney, whereas the fine ones fall down on the outside into the boxes n through the outer passages q and qi provided for this down into its inoperative position, whereby the' screens in are moved over the upper edge of the oblique plates :c: (Fig. l) which strip off the soot adhering to the lower surfaces of said screens,

the soot falling down through the passages q and q1 into the boxes n, as has already been mentioned. At the commencement of that change of position of the screens, especially of the screens iz, a part of the soot adhering to these latter screens falls off by itself and likewise falls down into the chimney together with the coarse soot, or flakes, whereas the other portion of that soot passes away in the other way stated.

Referring now to the modification illustratedin Figs. 9-12, this soot separator consists, first, -of an inner stationary hollow member or chimney top r of concrete and of an outer, likewise stationary hollow member ri of concrete, second of the two screen roofs i and iz which are located inside' the concrete member r2 and over the concrete member r, and third, of' the .means for lifting and lowering the screens and changing their positions, viz. from the oblique position in which they form the roofs, into vertical positions in which they are located between the walls of the concrete member and stand upright, as indicated in dotted lines in Fig. 9. The

positions of rest respectively. Below said ledges are horizontal brushes u and ui, suitably supported from the adjacent stationary walls, the object of which is to remove the adhering soot from the screens when they are moved downwardly by the members provided for this purpose, the arrangement of said brushes with respect to the screens being such that they are only slightly pressed against the screens when these are lowered, but arepressed forcibly against the screens when these are raised.

The lowermost portion of the space between the two concrete bodies forms a soot collecting chamber o from which extend downwardly two branches vi closed at their lower ends by flaps w.

As the device is located on the roof of the build-` ing in which the bakery or other manufacturing shop is housed it may, under certain circumstances, be difficult to get access to the branches v1 in a convenient manner. In such case a tube y (Fig. 9) may be jointed to a branch, the tube extending to any place where convenient removal of the collected soot is possible.

From Figs. 9 and 10 it 'appears that the device can constitute a hood for the chimney; it may be manufactured as a separate device and then be placed upon the chimney and amxed to the same.

I wish it to be understood that 1 do not limit myself merely to the details of the two constructional forms shown in the drawing solely by way of example. Still other constructional forms designed also in accordance with the principles of the present invention are possible without constituting departures from the same.

I claim:

1. A soot separator for chimneys, comprising a pair of screens which are movable towards one another in such a manner as to constitute a roof located above the orifice of the chimney, a vertically movable frame having said screens hinged to it and surrounding the chimney, and means for lifting and lowering said frame, the said screens being located vertically, and laterally from the chimney, when the said frame is in its lowered position.

2. A soot separator for chimneys, comprising screens, means for moving them into, and out of, the path of the smoke gases, means for removing the intercepted soot from said screens when they are being moved from their operative position into their inoperative one, and collecting chambers for the soot removed from the screens, said chambers being located at a side or sides of th chimney.

3. A soot separator for chimneys, comprising a group of large-meshed screens and a group o! ne meshed screens adapted to be moved into, and out of, the path of the smoke gases and so arranged relatively to the chimney that the smoke passes rst through the large-meshed screens and then through the fine meshed ones, and

means for operating the said groups of screens.

4. A soot separator for chimneys, comprising movable screens adapted to be placed over the orice of the chimney, a vertically movable frame to which said screens are hinged and which surrounds the chimney top, said screens being lmoved into vvertical position and being then located at opposite lateral surfaces of the chimney when they are being moved from their operative position into their inoperative one, and brushes so arranged with respect to ,the said screens as to remove from them the intercepted soot when they are being moved from the first-mentioned position into the other one.

5. A soot separator for chimneys, comprising longitudinally movable groups of coarse and ne screens, means for moving said groups of screens into, and out of, the path of the smoke gases, and a stationary shell enclosing the upper portion of the chimney and forming with the same a space adapted to receive said screens when they are in their inoperative positions.

6. A soot separator for chimneys, comprising longitudinally movable groups of coarse and ne screens, means tormoving said groups of screens into, and out of, the path of the smoke gases, and a stationary shell enclosing the upper portion of the chimney and forming with the same a space adapted to receive said screens when they are in their inoperative positions, the lower portion of said space constituting a soot collecting chamber.

7. A soot separator for chimneys. comprising a chimney hood composed of an inner hollow body adapted to constitute an extension of the chimney and an outer hollow body leaving a space between itself and said inner body; screens arranged inside said outer body and being in their operative position located above the inner one; a frame to which said screens are hinged and which can be lifted and lowered in said space, the said screens being located in vertical position in the said space when said frame is in its lower position, and means for actuating thesaid frame.

KARL BECK. 

